package jicheng;

//统计字符出现的次数

import java.util.Scanner;

public class StringTest03 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入一个字符串");
        String line = sc.nextLine();

        int bigcount = 0;
        int smallcount = 0;
        int numbercount = 0;

        for (int i = 0; i < line.length(); i++) {
            //获取字符串当中对应索引位置的字符
            char ch = line.charAt(i);

            if(ch>'A'&&ch<'Z'){
                bigcount++;
            }else if (ch>'a'&&ch<'z'){
                smallcount++;
            }else if(ch>'0'&&ch<'9'){
                numbercount++;
            }
        }
        System.out.println("大写字母：" + bigcount + "个");
        System.out.println("小写字母：" + smallcount + "个");
        System.out.println("数字：" + numbercount + "个");
    }
}
